Lock



o. F. RITERBuscH l 2,096,978

LOCK

` Filed April 25, 1936 @E jam- .1

Oct 26 1937- o. F. RITERBUSCH 2,096,978

LOCK

Filed April 25, 1936 V 3 Sheets-Sheet 3 Patented Get. 26, 1937 UNITED STATES PATENT oFFl/.CE

LOCK

Oscar F. Ritterbusch, Chicago, Ill. Application April 25, 1936, seria1`N0. '16,439

11 Claims. (C1. 292-97) The invention relates to locks and is particularly adapted to be embodied in locks of the type shown and described in U. S. Letters Patent 1,907,267 granted to me May 2, 1933, and in my pending application Serial No. 745,261 iiled Sept.

An object of the invention is to provide a lock which will hold a door against lateral movement relative to the door frame and thus preventratm 'tling of the door in the frame.

Another object of the invention is to provide animprloved lock of the kind described which is constructed so that it will be very difcult for an unauthorized person to open the door when the door is locked.

Referring-to the accompanying drawings:

Fig. 1 is a vertical longitudinal section' taken through a lock which embodies theinvention, the lock being shown mounted in a door which is hinged in `a suitable door frame.

Fig. 2 is a horizontal' section taken on line 2-2 of Fig. 1.

Fig. 3 is a section taken on the same line as Fig. 1 but showing parts of the lock in changed positions. o Fig. 4 is a section taken on line 4- -4 of Fig. 3.

Fig. 5 is a section taken on -line 5- -5 of Fig. 3.

Fig. 6 is a section taken on line 6-6 of Fig. 1,

and

Fig. 7 is a section taken on line 1-1 of Fig. 3.

Referring to the drawings, the reference character Il) designates a door which is mounted in the door frame by hinges (not shown). The door I0 is equipped with the improved lock which is designated generally by the reference character I2.

Lock I2 comprises a keeper I5 which is pivoted by a pin I6 in a housing member I1, the member I1 being iixed in the recess I8 provided in the 40 door frame II. A spring I9 disposed in the housing I1 has one end secured to a pin |9a, the other end of the spring |9'being in engagement with v the keeper I5. The keeper I5 has a corner |5a which rides upon the spring I9 when the keeper I5 is displaced angularly from the position wherein it is shown in Fig. 2 to the position wherein it is shown inFig. 4. It will be readily understood that during the initial portion of the moveurge the keeper I5 yieldingly in a counter-clock- A Wise direction (Figs. 2 and 4). The surfaces of the keeper |-5 adiacent the corner |5a are identiiied by the reference characters |5b and |5c.

C0 When the spring I9 engages the surface librthe ment of the keeper I5 from the position wherein.

spring tends to rotate the keeper in'a clockwise direction (Figs. 2 and 4). When the spring I9 engages the surface |50, the spring tends to rotate the keeper I5 in a counter-clockwise directionl The keeper l5 comprises arms 22 and 23,1the arm 22 being engaged by a plunger or wedge member 25 when the door is in its closed position (Figs. 3 and 4). For this purpose, the arm 22 is provided with an aperture 22a through which the lower end of the wedge member 25 passes.

The wedge member 25 is disposed in a fabricated housing 26 which, in turn, is disposed in a recess 21 provided in the free edge of the door I0. The housing 26 comprises a striker plate 30 provided with a slot 3| through which the arm 22 may pass to engage the wedge member 25 and a bar or plate 33, the plate 33 being carried by a plunger 34 which is slidably journalled in the housing 26 and in a lug 35 provided in the housing 26. A spring 38 yieldingly urges the plunger 34 and the plate 33 to the left (Figs. 1 to 4, inclusive). A pin 39 projecting through the right hand end (Fig. 1) of the plunger 34 is engageable with the lugr 35 to limit displacement of the plunger 34 to the left (Fig. 1); The' construction is such that when the door i`s opened, the plate 33 is displaced into the slot 3| by the spring 36 (Figs. 1 and 2). It will be noted that when the door I0 is in its closed position as illustrated in Figs. 3 and 4, the arm 22 engages the plate 33 and holds the plunger 34 in-its retracted position against the action of the spring 38. The plate 33 remains in engagement with the arm 22 during the initial opening of the door Ill until the plate 33 is disposed in the slot 3| (Fig. 2).

It will be noted that in Fig. 1, the arm 22 engages the lower portion 33a of the plate 33, the plate 33 being cut away to provide a shoulder 33h above which is a front surface 33e on the plate 33. The purpose of this construction will presently appear. y

'Ihe plunger or wedge member 25 is yieldingly urged in a downward direction by. a spring 46 `which has its lower end disposed in the recess formed in the upper end of the-plunger or wedge member 25. The upper end of the spring 40 is disposed around a pin 40a screw-threaded in a wall of the housing 26. The wedge member 25 is slidably journalled in lugs 4| and 42 provided in the housing 26.

A notch44 is formed in the wedge member 25. A pin projecting into the notch 44 pivots one end of a link |5| to the Wedge member 25. The

' notch limits angular displacement of the link |5| around the pin |50. A pin |52 projecting .from the other end ofthe link |5| rides in a slot |54 formed in the free en d of alever |55, the other end of the lever |55 being pivot/ed to a wall of the'.

housing 26 by a pin |56. -A slot |58 formed.' in

' the lever |55 intermediate its ends receives a pin |59 projecting from a lever 45 which is pivoted by a pin '46 in the housing 26. The lever 45 is provided with an integral sweep section 50 which is divided into two parts by a lug 5|. One sweep section surface is designated by the reference character 52 and the other by the reference char-` acter 53. When the lock is assembled as illustrated in Figs. 1 to 6, inclusive, each of the sweep surfaces 52 and 53 will co-operate with a lever 55 mounted on one end of a plug 56 journalled in aand rotated to rotate the lever 55 in either direction so that the free end of the lever 55 will ride upon the sweep surface 52 or 53 and displace the lever in a clockwise vdirection (Figs. 1 and 3) to lift the Wedge member 25 against the action of the spring 40. The key is rotated until the lever abuts against the lug 5|, whereupon the wedge member 25 will occupy the position wherein it is shown in Fig. 1.

A link 62 has one end pivoted to the sweep section 50 by a pin 63, the other end of the link x being provided with a slot 64 in which 'a pin 65 rides. The pin 65 projects from the free end of the L-shaped lever 66 which is pivoted on a pin 61 projecting into the housing 26. The levers 62 and y66 are shown and described in my co-pending application, Serial No. 745,261 and have the same functions in both disclosures. The' levers 62 and 66 Aoperatively connect the sweep section 50 with 4night latch mechanism which is fully described and shown in my co-pending application, Serial No. '745,261;

A pin 69 projecting from the lever 66 intermediate its ends is engageable by cam surfaces formed on a. lug 15 which is formed integral with the sleeve 16 and the pin 69 is also engageable with cam surfaces formed upon a lug /11 which is formed integral with the sleeve 18. Normally, the

lugs 15' and 11 are alined with each other as illustrated in Fig. 1. The lever 66 then occupies the position wherein it is shown in Fig. 1. However,r

if the sleeve 18 is an arly displaced in a clockwise direction (Fig. l the pin 69 will be displaced to the right (Fig. 1) so that the lever 66 will be angularly displaced in a counter-clockwise direction (Fig. 1) It is also obvious that the sleeve 18 may be displaced in a counter-clockwise direction iFig. 1) to 'displace the pin 69 andthe lever 66.- Lik'ewise, the sleeve 16 may be rotated in either direction to displace the pin 69 and the lever. 66.

.Formed integral with the sleeve 16 are lugs 80 which provide, a slot 8|, the purpose of which will presently appear.

It will be readily understoodthat if the spindle element 82 is turned in either direction the movement will cause one of the cam surfaces on the lug 15 to displace the pin 69 yand the lever 66 from the positions wherein they are shown'in Fig. 1. It will also beunderstood that'if the knob (not shown) secured to the spindle element 81 is rotated 1x1/either direction.' the. spindle s1 wm cause one of the ncam surfaceson the lug 11 to displace the pin 69 and the lever 66 from the position wherein they are shown in Fig. 1. It

will be further understood that such rotation of the spindle element 81 does not rotate the spindle element 86.

If either of the spindle elements 86 or 81 is rotated so that the lever 66 is displaced from the position wherein it is shown in Fig. 1, the link 62 displaces the leve-r 45 from the position wherein it is shown in Fig. 3 to the position wherein it is shown in Fig. 1, although in the case of Fig. 3, the lever 45 has been displaced through operation of the tumbler lock 60 instead of by rotation of either of the spindle elements 86 and 81.

'I'he lock is provided with improved latch mechanism |00 which is sometimes referred to as a night latch. The latching mechanism |00 preferably comprises two plungers 0| and |02 which have their outer ends slidably journaled in the striker plate 30 (Fig. 1). The inner end ofthe plunger |02 is of reduced diameter as indicated at |03 so that an annular shoulder |05 is provided. The end, |03 is slidably journale in a lug |05 projecting into the housing 26. 'I'he shoulder |04 is engageable by a pawl |08 pivoted on a pin |08a projecting into the-housing 26. A lever |09 has one of its ends pivoted to the free end'of the pawl |08, the other end of the lever |09 being provided with a slot |0 in which a pin rides.V The pin projects from a lug ||2 formed integral with the link 62. f

It will be noted Ythat the inner end of the plunger |0| is bent to provide a tongue I8 which is adapted to enter the slot 8|. The tongue |8 is slidably journalled in lugs I9' projecting inwardly from a wall of the housing 26. y

Secured to the plunger |0| is a detent |22 formed from spring metal. The detent |22 engages .a pin |23 projecting from a wall of the housing 26, the construction being such that the detent |22 co-operates with the pin 23 and yieldingly holds the plunger |0| in either its retracted position -or' its extended position.

Disposed intermediate the plungers |0| and |02 and pivoted' on a pin |25 projecting into the housing |26 is a lever |21. One end of the lever |21 engages a notch |28 formed in the plunger |0|. The other end of the lever |21 engages a, notch |30 formed in the plunger 02. The arrangement is such that if either of the plungers |0| or |02 is pushed manually into its retracted position,

the other plunger moves into its extended posid tion. Thus, when the plunger |02 is pushed from the extended position wherein itis shown in Fig. 3, to the retracted position wherein it is shown in Fig. 1, the lever |21 pushes the plunger |0| from the retracted position wherein it is shown in Fig. 3 to its extended position wherein it is shown in Fig. 1'.

A spring |09a extends between the lever |21 andthe pin 65.

The night latch mechanism comprises sleeves 16 and 18 having alined polygonal holes through which a spindle 85 of well known construction extends, the spindle 85 comprising independently rotatable spindle elements 86 and 81. Door knobs (not shown) are secured in any suitable manner .to the outer ends of the spindle elements 86 and 81.

,As fully explained l my co-pending application, Serial No. 745,261, angular displacement of -the spindle elements 66 in either direction will permit one to open the door |0 unless the door.

has been locked by adjustment of the tumbler lock 60 or vunless the door has been locked by the night latch mcharrism. ARotation of the spindle .element 81 in either directionU will permit one to open the door |0 from its inner side at any time.

If either of the spindle elements 86 or 81 is rotated so that the lever 66 is displaced from the position wherein it is shown in Fig. 3 to the position wherein it is shown in Fig. 1, the link 6,2 displaces the lever 45 from the position wherein it is shown in Fig.- 3, to the position wherein it is shown in Fig. 1, although in the case of Fig. 1, the lever 45 has been displaced through operation of the tumbler lock 60 instead of by rotation of either of the spindle elements 86 and 81.

In Figs. 3 and 4 the door I0 is shown in its closed position. It will be noted that the arm 22 extendsI through the slot 3| and holds the plunger 34 in a retracted position. It will also be noted that a tapered surface a at the lower end-of the wedge member 25 engages the arm 22 and cooperates with the wall 26a of the housing 26 to clamp the arm 22 firmly between the wedge member 25 and the wall 26a. It will be noted that the wall 26a is disposed adjacent the jamb side of the door, the jamb being shown at Ila. This construction differs from that shown in my copending application as in my co-pending application the arm 22 co-operates with the wall of the housing 26 disposed opposite the wall.26a. The present construction is an improvement over that shown in my co-pending application as in the present construction an unauthorized person can not insert an instrument between the free edge of the door l0 and the housing and then work it between the arm 22 and the adjacent wall `of the housing 26 and then gradually work the arm 22 out of the housing 26 to disengage it from the Wedge member 25 since it will be noted that in my present construction, the wedge member 25 passes through the aperture 22a in the arm 22. This construction is therefore advantageous as it assists in preventing unauthorized manipulation of the lock.

The link |5| has an upwardly extending lug |60 'provided with teeth |6| engageable with a tooth |62 which projects from a bar |63, the bar |63 being xed to the housing 26 by screws |64. A .spring IE5/tends, to rotate the link |5| in a clockwise direction' (Fig. 1) around the pin |50. It will be readily understood that if an attempt is made to lift the wedge' member 25 by pushing against the lower end thereof, the link |5| 'will tend to pivot around the pin |52 so that one of the teeth |6| will engage the tooth |62. This' function of the teeth |6| and |62 is best illustrated in Fig. 3. From an examination of that figure, it will also be understood that if the link |5| is lifted by the lever |55, the link |5| will pivot around the pin |50 a sufficient distance to insure disengagement of the teeth |6| from the tooth |62. Y

In Figs. 3 and 4 the lock is shown in its locked condition. In Figs. 1 and 2 theilock is shown unlocked with the door |0 moved slightly out of its closed position. .When the lock\|0 is to be unlocked, the lever 45 may be displaced as described above so that the pin |59 will displace the lever angularly to the position wherein it is shown in Fig. 1 so that it will lift the link |5| with its lug |60. The link |5| will lift the wedge member 25 from out of the aperture 22a so that the door may be opened. When the link |5| is lifted by the angular movement of the lever |55, the teeth |6| are moved out of the path of the tooth |62, this movement being against the action of the spring |65. f

When the lock I0 is in its locked condition as thorized person to insert an instrument into the lock to lift the Wedge member l25 will be defeated by the teeth |6| andthe tooth |62.

An advantage of the construction embodied in the, link |5| and the lever |55 is that a relatively large movement is obtained. for the wedge member 25.'. This is important as when the door sags or shrinks there will be sufficient movement 4of the wedge member 25 to insure that it will drop into the aperture 22ar when one locks the door. The tapered surface 25J on the wedge member 25 is provided to make allowance for shrinkage of the door. The tapered surface 25f simply provides clearance but the tapered surface 25a engages one side of the slot 22a and will be urged downwardly by the spring 40 until it actually contacts that .side of the slot.

It will be readily understood that if the free edge of the door sags downwardly a sufficient istance, the arm 22 will ride above the shouldezld and engage the surface 33e of the plate 33.7^ is construction is advantageous in the event the mechanism does not functionproperly and the wedge member 25 enters the aperture 22a only a short distance for, in that event, if the shoulder 33d were not provided one might liftv the free edge of-the door upward suddenly and bring the wedge vmember 25 clear of the arm 22 so that the door might be yopened by an unauthorized person.

It is understood that when the door is open as illustrated in Fig. 1, the wedge 25 rests upon the plunger 34. Then when the door is moved into its closed position, the arm 22 enters the aperture 3| and displaces the plate 33 and the plunger 34 against the action of the spring 36 until the several parts are in the positions wherein they are shown in Fig. 4, whereupon the wedge 25 is urged downwardly by the spring 40. The door is then secured rigidly in its closed position as the wedge member insures that the arm 22a will contact firmly with the inner surface of the wall 26a. When the door is opened, the arm 22 permits the plate 33 and the plunger 34 to move outwardly so that the wedge member 25 will again be supported by the plunger.

'Ihe present lock functions, to a great extent, like the lock described in my said co-pending application. Thus, when the door I0 is moved into its' closed position, the door will engage the arm 23 and displace the keeper member I5 from the position wherein it is shown in Fig. 2 to the position wherein it is shown in Fig. 4. During the final closing movement of the door the spring I9 will urge the keeper member in a: counter-clockwise direction and therefore will not retard the closing of the door. When the door is in its open position, the keeper member |5 is held yieldinglyin the position wherein it is shown in Figure 2 so that the arm 23 projects from the housing and is 'engageable by the door when the door is closed subsequently.

While I have shown and described certain embodiments of my invention, it is to be understood therefore, that it is capable of many modifications. Changes, therefore, in the construction and arrangement may be made without departing from the spirit and scope of the invention as disclosed inthe appended claims, in which it. is my intention to claim all novelty inherent in my invention as broadly as permissible, in-view of the prior art.

I claim:

1. A lock for a door mounted in a door frame,

which lock comprises a keeper member movably mounted on the door frame, a wedge member carried by the door and movable vertically to engage said keeper member to secure the door in its closed position, means for disengaging said wedge member from said keeper member, and means including toothed means carried by said wedge me erative position to prevent unauthorized vmanipulation of said wedge member. i

2. A lock for a door mounted in a door frame, which lock comprises a keeper member movably mounted on the door frame, a wedge member carried by the door and movable into a position wherein it engages said keeper member to lock the door in its closed position, means carried by the door and adapted to hold the wedge member in a retracted position, said means being adapted to be displaced by said keeper member so that said wedge member may move out of its retracted position and engage the keeper member to lock the door, means for disengaging said wedge member from said keeper member, and toothed -means to dog said wedge member in operative position for preventing unauthorized manipulation of said wedge member.

3. A lock for a door mountedin a door-frame, which lock comprises a keeper member pivotally mounted on a door tol oscillate in a substantially horizontal plane, a wedge member carried by the door and movable vertically into a position wherein it engages said keeper member to lock the door in its closed position, a spring pressed member carried by the door and adapted to hold the vwedge member in.a retracted position, said spring pressed member being movable into a retracted position by said keeper member and being provided with a shoulder to engage the under side of said keeper member when the door sags a predetermined amount, and means for disengaging said wedge member from said keeper member.

4. A lock for a door mounted in a door frame, which lock comprises a keeper member pivotally mounted on the door frame to oscillate in a substantially horizontal plane, a Wedge member carried by the door and movable vertically into a poy sition wherein it engages said keeper member to lock the door in its closed position, a spring pressed plunger controlled by said keeper member and mounted in said door to hold said wedge member in a retracted position, said keeper member being adapted to displace said plunger into a retracted position whereupon said Wedge member` engages said keeper member, said plunger being provided with-a shoulder engageablefwith the under side of said keeper member when said door sags a predetermined distance, and means for disengaging said wedge member from said keeper member.

5. A lock for-a door mounted in a door frame, which lock comprises a two-armed keeper member pivotally mounted in the door frame, one of said arms being erigageable by said door to swing said keeper member into its functionally operative position, a plunger carried by said door andengageable by'the other of said arms, said other .arm being provided with an aperture, a wedge member movably mounted in said door and adapted to pass into said aperture to co-operate with said keeper member to secure thvdoor in its closed position said plunger being adapted to hold "Said wedge member in a retracted position, and

ber to dog said wedge member in opmeans for disengaging said wedge member from said keeper member. l

6. A lock for a door mounted in a door frame having a jamb against which the door shuts, which lock comprises a keeper member movably mounted on the door frame and movable into a position wherein it projects into said door when said door is closed, a housing in the door, a wedge member in the housing and movablevertically to engage said keeper member and clamp the keeper member between the wedge member and the wall of the housing nearest the jamb side of said door, and means for disengaging said wedge member from said keeper member.

'7. A lock for a door mounted in adoor frame having a jamb against which the door shuts, which lock comprises a keeper member movably mounted on the door frame and movable into a position wherein it projects into said door when said door is closed, a housing in the door, a locking member carried by the housing and movable to engage said keeper member and clamp the keeper member between the locking member and the wall of the housing nearest the jamb side of the door, and means for disengaging said locking member from said keeper member.

8. A lock for a door mounted in a door frame, which lock comprises a keeper member movably mounted on the door frame, a wedge member carried by the door and engageable with said keeper member to secure the door 'n its closed position, means for disengaging said Wedge member from said keeper member, and means including toothed means carried by said wedge member to dog the wedge member in operative position to prevent unauthorized manipulation thereof.

9. A lock for a door mounted in a door frame, which lock comprises a keeper member movably mounted on the door frame,v'a Wedge member carried by the door land engageable with said keeper member to secure the doorin its closed position,means including a link pivoted to said wedge member for disengaging. it from said keeper member, and means including toothed means carried by said link to dog the wedge member in operative position to prevent unauthorized manipulation thereof.

l0. A lock for a door mounted in a door frame, which lock comprises a keeper member movably mounted on the door frame, a Wedge member carried by the door and engageable with said keeper member to secure the door in its closed position, means for disengaging said Wedge member from said keeper member, and means in- ,cluding toothed means pivoted on said wedge member to dogA the wedge member in operative position to prevent unauthorized manipulation thereof. f

11. A lock for a door mounted in a door frame,

which lock comprises a keeper member movably 

